What is the function of the ampr gene in a plasmid vector?
A) It provides several unique restriction enzyme recognition sites for opening up the plasmid.
B) It allows a researcher to separate bacterial cells with a plasmid from those without a plasmid.
C) It contains an origin for replication of the bacterial chromosome.
D) It allows a researcher to distinguish plasmids with an insert from those without an insert.
E) It is required for packing plasmid DNA into bacteriophage heads.
B) It allows a researcher to separate bacterial cells with a plasmid from those without a plasmid.
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Delivery of bile into the small intestine causes the __________ of fats, breaking them into smaller,
more easily digested droplets. Fill in the blank(s) with the appropriate word(s).
In instances in the eukaryotic genome, DNA sequences represent evolutionary vestiges of duplicated copies of genes. What are such regions called and what are their characteristics?
What will be an ideal response?
________ are symbiotic associations between fungi and plant roots.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT an adhesion mechanism that bacteria use to attach to a host?
A) fimbriae attach to epithelium of host B) glycocalyx anchors the microbe to the host C) dextran slime layer glues the microbe to the host surface D) envelope spikes puncture cells for entry